There may be different reason for [pii_email_a689a97e79a626e7f9b8] error you may face. Some are mentioned below…
Using an older version of Microsoft Outlook is the main reason this error comes up.
Cache and cookies can be the cause of error messages.
Wrong settings of the record.
The main reason for this error is the conflict with the STMP server.
The primary reason can be the wrong instalment of the software fondness.
If you want to learn how to fix such error then you can learn about by following our blog…